[ofa-general] [RFC] [PATCH 1/5 v2] ib/ipoib: specify Traffic Class with PR queries for QoS support

[Sean Hefty]

To support QoS within and between subnets, modify IPoIB to request
specific Traffic Class values with path record queries, using
the value associated with the IPoIB broadcast group.

Signed-off-by: Sean Hefty <sean.hefty at intel.com>
---

 drivers/infiniband/ulp/ipoib/ipoib.h           |   22 +++++++++++++++++++++-
 drivers/infiniband/ulp/ipoib/ipoib_main.c      |    7 ++++---
 drivers/infiniband/ulp/ipoib/ipoib_multicast.c |   22 ----------------------
 3 files changed, 25 insertions(+), 26 deletions(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 285c143..fc16bce 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -113,7 +113,27 @@ struct ipoib_pseudoheader {
 	u8  hwaddr[INFINIBAND_ALEN];
 };
 
-struct ipoib_mcast;
+/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
+struct ipoib_mcast {
+	struct ib_sa_mcmember_rec mcmember;
+	struct ib_sa_multicast	 *mc;
+	struct ipoib_ah          *ah;
+
+	struct rb_node    rb_node;
+	struct list_head  list;
+
+	unsigned long created;
+	unsigned long backoff;
+
+	unsigned long flags;
+	unsigned char logcount;
+
+	struct list_head  neigh_list;
+
+	struct sk_buff_head pkt_queue;
+
+	struct net_device *dev;
+};
 
 struct ipoib_rx_buf {
 	struct sk_buff *skb;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c
b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 894b1dc..a4a8cbc 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -468,9 +468,10 @@ static struct ipoib_path *path_rec_create(struct net_device *dev,
void *gid)
 	INIT_LIST_HEAD(&path->neigh_list);
 
 	memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid));
-	path->pathrec.sgid      = priv->local_gid;
-	path->pathrec.pkey      = cpu_to_be16(priv->pkey);
-	path->pathrec.numb_path = 1;
+	path->pathrec.sgid          = priv->local_gid;
+	path->pathrec.pkey          = cpu_to_be16(priv->pkey);
+	path->pathrec.numb_path     = 1;
+	path->pathrec.traffic_class = priv->broadcast->mcmember.traffic_class;
 
 	return path;
 }
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index aae3670..94a5709 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -57,28 +57,6 @@ MODULE_PARM_DESC(mcast_debug_level,
 
 static DEFINE_MUTEX(mcast_mutex);
 
-/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
-struct ipoib_mcast {
-	struct ib_sa_mcmember_rec mcmember;
-	struct ib_sa_multicast	 *mc;
-	struct ipoib_ah          *ah;
-
-	struct rb_node    rb_node;
-	struct list_head  list;
-
-	unsigned long created;
-	unsigned long backoff;
-
-	unsigned long flags;
-	unsigned char logcount;
-
-	struct list_head  neigh_list;
-
-	struct sk_buff_head pkt_queue;
-
-	struct net_device *dev;
-};
-
 struct ipoib_mcast_iter {
 	struct net_device *dev;
 	union ib_gid       mgid;